Question

A boy walks at the speed of24/10 km/hr for 2 hours and then as the speed of the3/2 km/hourfor next 2 hours. Find the
distance travelled by the boy in 4 hours.​

Answer 1

Answer:

Let the distance of his school from the house be x

⇒ The difference in time =(15−5)min

=10min

=

60

10

hr

=

6

1

hr

⇒ Speed during next journey =10+2=12km/hr

According to the question,

⇒

10

x

−

12

x

=

6

1

⇒

5

x

−

6

x

=

3

1

⇒

30

6x−5x

=

3

1

⇒

30

x

=

3

1

⇒ x=

3

30

∴ x=10km

∴ The distance of boy school from house is 10km